z8f1601 ZiLOG Semiconductor, z8f1601 Datasheet - Page 52

• Manufacturer Part Number: z8f1601
• Description: Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
• Manufacturer: ZiLOG Semiconductor

Table 10. Port Availability by Device and Package Type (Continued)
Architecture
GPIO Alternate Functions
PS017609-0803
Device
Z8F6401
Z8F6402
Z8F6403
System
DATA
Clock
Bus
Packages
44-pin
64- and 68-pin
80-pin
Data Register
Port Output
Figure 64 illustrates a simplified block diagram of a GPIO port pin. In this figure, the abil-
ity to accommodate alternate functions and variable port current drive strength are not
illustrated.
Figure 64. GPIO Port Pin Block Diagram
Many of the GPIO port pins can be used as both general-purpose I/O and to provide access
to on-chip peripheral functions such as the timers and serial communication devices. The
Port A-H Alternate Function sub-registers configure these pins for either general-purpose
I/O or alternate function operation. When a pin is configured for alternate function, control
D
Q
Port A
[7:0]
[7:0]
[7:0]
System
Clock
Port Output Control
Port Data Direction
Port B
[7:0]
[7:0]
[7:0]
Data Register
Port C
Port Input
Q
[7:0]
[7:0]
[7:0]
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
D
Port D
[6:0]
[7:0]
[7:0]
Port E
Q
[7:0]
[7:0]
-
D
Port F
[7:0]
Schmitt Trigger
[7]
-
GND
VDD
General-Purpose I/O
Port G
[7:0]
[3]
-
Z8 Encore!
Port
Pin
Port H
[3:0]
[3:0]
-
®
34